The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 02, 2015
Filed:
Oct. 27, 2011
Jeremy L. Wade, San Francisco, CA (US);
Michael Eng, San Jose, CA (US);
Ryan J. Garrone, Wildwood, MO (US);
Mark Brown, San Jose, CA (US);
Jeremy L. Wade, San Francisco, CA (US);
Michael Eng, San Jose, CA (US);
Ryan J. Garrone, Wildwood, MO (US);
Mark Brown, San Jose, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
Electronic devices may be provided with compasses for detecting the Earth's magnetic field. Electronic devices may be provided with electronic components that generate interfering magnetic fields for the compass. Electronic components may be coupled between a power supply line and a power return line on a printed circuit. The power return line may be configured to generate a compensating magnetic field to counteract the interfering magnetic fields. The power return line may be formed parallel to the power supply line. The power supply line may have multiple branches equidistant from the compass. The power return line may have a portion closer to the compass than the power supply line and the electronic component. The power return line may have multiple branches, may be provided with resistors on each branch and may include a portion of a circular loop the runs around the compass on the printed circuit board.